摘要:
Time-coherency traces generated during velocity analysis are displayed in panels where each panel contains traces representing a single selected trial stacking velocity function and a plurality of common midpoint locations along a seismic line of exploration. Points selected from the panels, optimally by comparison with stacked sections, are used to generate a time velocity funtion for stacking, NMO correction, interval velocity determination, or other uses.
摘要:
A method for quantitatively distinguishing seismic events on a seismic record for inferring changes in the geological character of the subterranean formations. Reflection coefficients are obtained for such seismic events and a first set of attributes indicative of amplitude variations in the offset seismic signals corresponding to the seismic event as a function of incident angle are obtained therefrom. The first set of attributes provide a seismologist with a diagnostic tool for quantitatively evaluating subtle changes in the seismic event. A second set of attributes which are functions of the first set of attributes provide the seismologist with additional diagnostic tools for evaluating subtle changes in the seismic events.
摘要:
A mold and process for rebuilding grouser bars includes an upwardly disposed mold base member having a centrally disposed spine extending the length thereof. A pair of upwardly disposed mold side members abut the spine of the base member to form a mold cavity having the configuration of a grouser bar. A track plate is placed in abutment to the mold with the worn grouser bar extending into the mold cavity, and is clamped into such position. A consumable welding electrode is inserted through the top of the mold cavity, and the electroslag process is started. The mold is cooled by water jackets, so that the metal fuses to the worn grouser bar, rebuilding it to its original dimensions.
摘要:
A used lubricating oil is reclaimed by vacuum distillation. The bottoms is vacuum pyrolyzed with limestone to form a virtually insoluble coked mass containing insoluble metal carbonates and free metal. This solid coked residuum is suitable for landfilling.